US10166879B2 - Battery discharge preventing system for hybrid vehicle and battery discharge preventing method using the same - Google Patents

Battery discharge preventing system for hybrid vehicle and battery discharge preventing method using the same Download PDF

Info

Publication number
US10166879B2
US10166879B2 US14/687,194 US201514687194A US10166879B2 US 10166879 B2 US10166879 B2 US 10166879B2 US 201514687194 A US201514687194 A US 201514687194A US 10166879 B2 US10166879 B2 US 10166879B2
Authority
US
United States
Prior art keywords
voltage battery
battery
high voltage
relay
hybrid vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US14/687,194
Other versions
US20150303716A1 (en
Inventor
Young Ok Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HL Mando Corp
Original Assignee
Mando Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mando Corp filed Critical Mando Corp
Assigned to MANDO CORPORATION reassignment MANDO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, YOUNG OK
Publication of US20150303716A1 publication Critical patent/US20150303716A1/en
Application granted granted Critical
Publication of US10166879B2 publication Critical patent/US10166879B2/en
Assigned to HL MANDO CORPORATION reassignment HL MANDO CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MANDO CORPORATION
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B60L58/14—Preventing excessive discharging
    • B60L11/1861—
    • B60L11/1859—
    • B60L11/1862—
    • B60L11/1868—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
    • H02J7/0026—
    • H02J7/0054—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H02J7/007184—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage in response to battery voltage gradient
    • H02J7/0081—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y02T10/7005—
    • Y02T10/7044—
    • Y02T10/7055—
    • Y02T10/7066—

Definitions

  • the present invention relates to a battery discharge preventing system for a hybrid vehicle, and a battery discharge preventing method using the same, and more particularly, to a battery discharge preventing system for a hybrid vehicle that charges a low voltage battery through selective connection of a relay device to prevent the low voltage battery from discharging, and a battery discharge preventing method using the same.
  • black boxes are operated by receiving a power supply when a vehicle is operated, but the operation of the black box is interrupted when the engine of the vehicle is stopped and an ACC power supply is turned off.
  • black boxes are often connected to permanent power supplies to be driven and used even when the ACC power supply is turned off.
  • a separate auxiliary battery may be purchased and mounted in order to overcome this problem, but there is a problem that a burden increases because the auxiliary battery is expensive.
  • the present invention is directed to a battery discharge preventing system for a hybrid vehicle and a battery discharge preventing method using the same which may enable long time operation of a black box while parking and stopping of a vehicle.
  • the present invention is also directed to a battery discharge preventing system for a hybrid vehicle and a battery discharge preventing method using the same which may solve a battery discharge problem according to operation of a black box.
  • the present invention is also directed to a battery discharge preventing system for a hybrid vehicle and a battery discharge preventing method using the same which may be implemented without consuming extra costs.
  • a battery discharge preventing method for a hybrid vehicle including: measuring, by a first voltage sensor, a voltage level of a low voltage battery for supplying power to a black box; and supplementing, by a control unit, power of the low voltage battery using a high voltage battery by connecting a first relay, when the voltage level of the low voltage battery is a first reference value or less.
  • the battery discharge preventing method may further include, between the measuring of the voltage level of the low voltage battery and the supplementing of the power of the low voltage battery, determining a voltage level of the high voltage battery, wherein the supplementing of the power of the low voltage battery is performed when the voltage level of the high voltage battery is determined to be a second reference value or more in the determining of the voltage level of the high voltage battery.
  • the battery discharge preventing method may further include, after the supplementing of the power of the low voltage battery, measuring a voltage level of the high voltage battery, and cancelling, by the control unit, connection of the first relay, when the voltage level of the high voltage battery is a second reference value or less.
  • the high voltage battery may supply a power supply to an inverter to drive a motor of the vehicle, and a second relay may be disposed in a path connecting the high voltage battery and the inverter, and the battery discharge preventing method may further include, after the supplementing of the power of the low voltage battery, cancelling, by the control unit, at least one of connection of the first relay and connection of the second relay, when collision of the vehicle is detected by an impact sensor mounted in the vehicle.
  • a battery discharge preventing system for a hybrid vehicle including: a high voltage battery that drives a motor of the vehicle; a low voltage battery that supplies power to a black box; a first voltage sensor that measures a voltage level of the low voltage battery; a converter that charges the low voltage battery using the high voltage battery; a first relay that selectively regulates a current path between the high voltage battery and the converter; and a control unit that controls the first relay according to a measurement value of the first voltage sensor.
  • the battery discharge preventing system may further include a second voltage sensor that measures a voltage level of the high voltage battery, wherein the control unit controls the first relay by reflecting a measurement value of the second voltage sensor.
  • the battery discharge preventing system may further include an impact sensor that detects collision of the vehicle, wherein the control unit controls the first relay by reflecting a measurement value of the impact sensor.
  • the battery discharge preventing system may further include an inverter that receives a power supply from the high voltage battery and drives the motor of the vehicle and a second relay that selectively regulates a current path between the high voltage battery and the inverter, wherein the control unit controls at least one of the first relay and the second relay by reflecting the measurement value of the impact sensor.
  • FIG. 1 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a first embodiment of the present invention
  • FIG. 2 is a flowchart showing each operation of a battery discharge preventing method for a hybrid vehicle according to an embodiment of the present invention
  • FIG. 3 is a view showing a state in which connection of a first relay is cancelled in a battery discharge preventing system for a hybrid vehicle according to an embodiment of the present invention.
  • FIG. 4 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a second embodiment of the present invention.
  • FIG. 1 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a first embodiment of the present invention.
  • the battery discharge preventing system for the hybrid vehicle includes a high voltage battery 100 , a low voltage battery 110 , a first voltage sensor 120 , a second voltage sensor 130 , a converter 30 , a first relay 35 , and a control unit 40 .
  • the high voltage battery 100 is a component that supplies a power supply to the inverter 20 to drive the motor 10 of the vehicle, and the low voltage battery 110 supplies power to a black box 200 mounted in the vehicle.
  • the first voltage sensor 120 measures a voltage level of the low voltage battery 110
  • the second voltage sensor 130 measures a voltage level of the high voltage battery 100 .
  • the converter 30 may be connected to a power supply path for connecting the high voltage battery 100 and the inverter 20 to charge the low voltage battery 110 through the high voltage battery 100 .
  • the first relay 35 selectively regulates a current path of the high voltage battery 100 , and the control unit 40 controls the first relay 35 according to a measurement value of the first voltage sensor 120 .
  • the control unit 40 may be independently provided as shown in FIG. 1 , or may be provided to be built in the converter 30 or the inverter 20 .
  • a battery discharge preventing method using the battery discharge preventing system for the hybrid vehicle according to the first embodiment of the present invention includes operation S 10 for measuring a voltage level of the low voltage battery, operation S 20 for determining a voltage level of the high voltage battery, and operation S 30 for supplementing power of the low voltage battery.
  • operation S 10 for measuring the voltage level of the low voltage battery a process of measuring a voltage level of the low voltage battery 110 for supplying power to the black box 200 using the first voltage sensor 120 is performed.
  • the low voltage battery 110 continuously measures the voltage level of the low voltage battery 110 in a state in which power is supplied to the black box 200 while the vehicle is parked or stopped.
  • the control unit 40 may supplement the power of the low voltage battery 110 using the high voltage battery 100 by connecting the first relay 35 .
  • the low voltage battery 110 may continuously receive power from the high voltage battery 100 , thereby enabling long time operation of the black box 200 .
  • operation S 10 for measuring the voltage level of the low voltage battery may be further included.
  • operation S 30 for supplementing the power of the low voltage battery operation S 20 for determining a voltage level of the high voltage battery may be further included.
  • the voltage level of the high voltage battery 100 may be determined, and when it is determined that the voltage level of the high voltage battery 100 is a second reference value or more, operation S 30 for supplementing the power of the low voltage battery may be performed.
  • whether the high voltage battery 100 is in a state capable of supplementing power may be determined to assist the power of the low voltage battery, and therefore it is possible to prevent discharge of the high voltage battery 100 .
  • the present operation S 20 may be performed by the second voltage sensor 130 , but may be performed through measurement of state of charge (SOC) level.
  • SOC state of charge
  • operation S 30 for supplementing the power of the low voltage battery operation S 40 for measuring the voltage level of the high voltage battery and operation S 50 for cancelling connection of the first relay may be further performed.
  • the voltage level of the high voltage battery 100 may be gradually reduced.
  • the control unit 40 may cancel the connection of the first relay 35 as shown in FIG. 3 . As a result, it is possible to prevent discharge of the high voltage battery 100 .
  • FIG. 4 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a second embodiment of the present invention.
  • the battery discharge preventing system for the hybrid vehicle according to the second embodiment of the present invention may have the same components as those in the first embodiment of the present invention.
  • an impact sensor 210 is further provided and the control unit 40 controls the first relay 35 by reflecting a measurement value of the impact sensor 210 .
  • the control unit 40 cancels connection of the first relay 35 .
  • the impact sensor 210 may be independently mounted in the vehicle, may be included in the black box 200 as shown in FIG. 4 , or may be included in an air bag device.
  • the second embodiment it is possible to prevent a risk to a driver due to the high voltage battery 100 at the time of collision of the vehicle, and protect a hybrid system.
  • a second relay 36 may be further disposed in the path for connecting the high voltage battery 100 and the inverter 20 , and when the collision of the vehicle is detected by the impact sensor 210 , the control unit 40 may cancel connection of the second relay 36 , and therefore it is possible to more reliably protect the hybrid system even when the collision of the vehicle occurs while the vehicle is parked or stopped.
  • control unit 40 may discern a degree of collision of the vehicle or a degree of damage to the vehicle using signals received from the impact sensor 210 at the time of collision of the vehicle, and selectively control at least one of the first relay 35 and the second relay 36 based on the discerned information.
  • the battery discharge preventing system for the hybrid vehicle according to the present invention and the battery discharge preventing method using the same may have the following effects.
  • a relay device may be selectively controlled by a converter control unit, and therefore it is possible to prevent discharge of the battery caused by long time operation of the black box when the vehicle is parked or stopped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Secondary Cells (AREA)

Abstract

Disclosed herein is a battery discharge preventing system for a hybrid vehicle including a high voltage battery that drives a motor of the vehicle, a low voltage battery that supplies power to a black box, a first voltage sensor that measures a voltage level of the low voltage battery, a converter that charges the low voltage battery using the high voltage battery, a first relay that selectively regulates a current path between the high voltage battery and the converter, and a control unit that controls the first relay according to a measurement value of the first voltage sensor.

Description

CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority to and the benefit of Korean Patent Application No. 10-2014-0045500, filed on Apr. 16, 2014, the disclosure of which is incorporated herein by reference in its entirety.
BACKGROUND
1. Field of the Invention
The present invention relates to a battery discharge preventing system for a hybrid vehicle, and a battery discharge preventing method using the same, and more particularly, to a battery discharge preventing system for a hybrid vehicle that charges a low voltage battery through selective connection of a relay device to prevent the low voltage battery from discharging, and a battery discharge preventing method using the same.
2. Discussion of Related Art
In recent years, persons who mount and use black boxes in their vehicles in order to prevent traffic accidents and secure evidence have been significantly increasing. Such black boxes are operated by receiving a power supply when a vehicle is operated, but the operation of the black box is interrupted when the engine of the vehicle is stopped and an ACC power supply is turned off.
Here, many persons desire to monitor the state of the vehicle even while the vehicle is stopped or parked, and therefore black boxes are often connected to permanent power supplies to be driven and used even when the ACC power supply is turned off.
However, when a black box is left in a state in which power is supplied for a long time, a low voltage battery of the vehicle is highly likely to be discharged. Thus, there is a problem that it is difficult to operate a block box for a long time.
A separate auxiliary battery may be purchased and mounted in order to overcome this problem, but there is a problem that a burden increases because the auxiliary battery is expensive.
Thus, there are demands for a method for solving the above-mentioned problems.
SUMMARY OF THE INVENTION
The present invention is directed to a battery discharge preventing system for a hybrid vehicle and a battery discharge preventing method using the same which may enable long time operation of a black box while parking and stopping of a vehicle.
The present invention is also directed to a battery discharge preventing system for a hybrid vehicle and a battery discharge preventing method using the same which may solve a battery discharge problem according to operation of a black box.
The present invention is also directed to a battery discharge preventing system for a hybrid vehicle and a battery discharge preventing method using the same which may be implemented without consuming extra costs.
According to an aspect of the present invention, there is provided a battery discharge preventing method for a hybrid vehicle including: measuring, by a first voltage sensor, a voltage level of a low voltage battery for supplying power to a black box; and supplementing, by a control unit, power of the low voltage battery using a high voltage battery by connecting a first relay, when the voltage level of the low voltage battery is a first reference value or less.
The battery discharge preventing method may further include, between the measuring of the voltage level of the low voltage battery and the supplementing of the power of the low voltage battery, determining a voltage level of the high voltage battery, wherein the supplementing of the power of the low voltage battery is performed when the voltage level of the high voltage battery is determined to be a second reference value or more in the determining of the voltage level of the high voltage battery.
The battery discharge preventing method may further include, after the supplementing of the power of the low voltage battery, measuring a voltage level of the high voltage battery, and cancelling, by the control unit, connection of the first relay, when the voltage level of the high voltage battery is a second reference value or less.
The high voltage battery may supply a power supply to an inverter to drive a motor of the vehicle, and a second relay may be disposed in a path connecting the high voltage battery and the inverter, and the battery discharge preventing method may further include, after the supplementing of the power of the low voltage battery, cancelling, by the control unit, at least one of connection of the first relay and connection of the second relay, when collision of the vehicle is detected by an impact sensor mounted in the vehicle.
According to another aspect of the present invention, there is provided a battery discharge preventing system for a hybrid vehicle including: a high voltage battery that drives a motor of the vehicle; a low voltage battery that supplies power to a black box; a first voltage sensor that measures a voltage level of the low voltage battery; a converter that charges the low voltage battery using the high voltage battery; a first relay that selectively regulates a current path between the high voltage battery and the converter; and a control unit that controls the first relay according to a measurement value of the first voltage sensor.
The battery discharge preventing system may further include a second voltage sensor that measures a voltage level of the high voltage battery, wherein the control unit controls the first relay by reflecting a measurement value of the second voltage sensor.
The battery discharge preventing system may further include an impact sensor that detects collision of the vehicle, wherein the control unit controls the first relay by reflecting a measurement value of the impact sensor.
The battery discharge preventing system may further include an inverter that receives a power supply from the high voltage battery and drives the motor of the vehicle and a second relay that selectively regulates a current path between the high voltage battery and the inverter, wherein the control unit controls at least one of the first relay and the second relay by reflecting the measurement value of the impact sensor.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which:
FIG. 1 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a first embodiment of the present invention;
FIG. 2 is a flowchart showing each operation of a battery discharge preventing method for a hybrid vehicle according to an embodiment of the present invention;
FIG. 3 is a view showing a state in which connection of a first relay is cancelled in a battery discharge preventing system for a hybrid vehicle according to an embodiment of the present invention; and
FIG. 4 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a second embodiment of the present invention.
 DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. While the present invention is shown and described in connection with exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit and scope of the invention.
FIG. 1 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a first embodiment of the present invention.
As shown in FIG. 1, the battery discharge preventing system for the hybrid vehicle according to a first embodiment of the present invention includes a high voltage battery 100, a low voltage battery 110, a first voltage sensor 120, a second voltage sensor 130, a converter 30, a first relay 35, and a control unit 40.
Specifically, the high voltage battery 100 is a component that supplies a power supply to the inverter 20 to drive the motor 10 of the vehicle, and the low voltage battery 110 supplies power to a black box 200 mounted in the vehicle.
The first voltage sensor 120 measures a voltage level of the low voltage battery 110, and the second voltage sensor 130 measures a voltage level of the high voltage battery 100.
In addition, the converter 30 may be connected to a power supply path for connecting the high voltage battery 100 and the inverter 20 to charge the low voltage battery 110 through the high voltage battery 100.
In this instance, on a connection path that connects a power supply path for connecting the converter 30 and the high voltage battery 100, the first relay 35 selectively regulates a current path of the high voltage battery 100, and the control unit 40 controls the first relay 35 according to a measurement value of the first voltage sensor 120. Meanwhile, the control unit 40 may be independently provided as shown in FIG. 1, or may be provided to be built in the converter 30 or the inverter 20.
A battery discharge preventing method using the battery discharge preventing system for the hybrid vehicle according to the first embodiment of the present invention includes operation S10 for measuring a voltage level of the low voltage battery, operation S20 for determining a voltage level of the high voltage battery, and operation S30 for supplementing power of the low voltage battery.
Specifically, in operation S10 for measuring the voltage level of the low voltage battery, a process of measuring a voltage level of the low voltage battery 110 for supplying power to the black box 200 using the first voltage sensor 120 is performed.
That is, the low voltage battery 110 continuously measures the voltage level of the low voltage battery 110 in a state in which power is supplied to the black box 200 while the vehicle is parked or stopped. In this instance, when the voltage level of the low voltage battery 110 is reduced to a predetermined first reference value or less, the control unit 40 may supplement the power of the low voltage battery 110 using the high voltage battery 100 by connecting the first relay 35.
Thus, the low voltage battery 110 may continuously receive power from the high voltage battery 100, thereby enabling long time operation of the black box 200.
Meanwhile, between operation S10 for measuring the voltage level of the low voltage battery and operation S30 for supplementing the power of the low voltage battery, operation S20 for determining a voltage level of the high voltage battery may be further included.
In the present operation S20, the voltage level of the high voltage battery 100 may be determined, and when it is determined that the voltage level of the high voltage battery 100 is a second reference value or more, operation S30 for supplementing the power of the low voltage battery may be performed.
That is, whether the high voltage battery 100 is in a state capable of supplementing power may be determined to assist the power of the low voltage battery, and therefore it is possible to prevent discharge of the high voltage battery 100.
The present operation S20 may be performed by the second voltage sensor 130, but may be performed through measurement of state of charge (SOC) level.
Meanwhile, after operation S30 for supplementing the power of the low voltage battery, operation S40 for measuring the voltage level of the high voltage battery and operation S50 for cancelling connection of the first relay may be further performed.
That is, in a state in which power is supplied to the low voltage battery 110 using the high voltage battery 100, the voltage level of the high voltage battery 100 may be gradually reduced. Thus, when the voltage level of the high voltage battery 100 is detected to be a predetermined second reference value or less by the second voltage sensor 130, the control unit 40 may cancel the connection of the first relay 35 as shown in FIG. 3. As a result, it is possible to prevent discharge of the high voltage battery 100.
The first embodiment of the present invention has been described above, and hereinafter, a second embodiment of the present invention will be described.
FIG. 4 is a view showing each component of a battery discharge preventing system for a hybrid vehicle according to a second embodiment of the present invention.
As shown in FIG. 4, the battery discharge preventing system for the hybrid vehicle according to the second embodiment of the present invention may have the same components as those in the first embodiment of the present invention.
However, there are differences between the first and second embodiments of the present invention in that an impact sensor 210 is further provided and the control unit 40 controls the first relay 35 by reflecting a measurement value of the impact sensor 210.
Specifically, in the second embodiment, when collision of the vehicle is detected by the impact sensor 210 in a state in which the high voltage battery 100 supplement the power of the low voltage battery 110, the control unit 40 cancels connection of the first relay 35. Here, the impact sensor 210 may be independently mounted in the vehicle, may be included in the black box 200 as shown in FIG. 4, or may be included in an air bag device.
Thus, according to the second embodiment, it is possible to prevent a risk to a driver due to the high voltage battery 100 at the time of collision of the vehicle, and protect a hybrid system.
Meanwhile, according to the second embodiment of the present invention, a second relay 36 may be further disposed in the path for connecting the high voltage battery 100 and the inverter 20, and when the collision of the vehicle is detected by the impact sensor 210, the control unit 40 may cancel connection of the second relay 36, and therefore it is possible to more reliably protect the hybrid system even when the collision of the vehicle occurs while the vehicle is parked or stopped.
In addition, the control unit 40 may discern a degree of collision of the vehicle or a degree of damage to the vehicle using signals received from the impact sensor 210 at the time of collision of the vehicle, and selectively control at least one of the first relay 35 and the second relay 36 based on the discerned information.
The battery discharge preventing system for the hybrid vehicle according to the present invention and the battery discharge preventing method using the same may have the following effects.
First, it is possible to attain long time operation of the black box even while the vehicle is parked or stopped in which the engine of the vehicle is stopped and the ACC power supply are turned off.
Second, a relay device may be selectively controlled by a converter control unit, and therefore it is possible to prevent discharge of the battery caused by long time operation of the black box when the vehicle is parked or stopped.
Third, it is unnecessary to additionally mount an auxiliary battery for black box, thereby reducing costs.
It will be apparent to those skilled in the art that various modifications can be made to the above-described exemplary embodiments of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention covers all such modifications provided they come within the scope of the appended claims and their equivalents.

Claims (6)

What is claimed is:
1. A battery discharge preventing method for a hybrid vehicle, comprising:
measuring, by a first voltage sensor, a voltage level of a low voltage battery for supplying electric power to an electric device installed in the hybrid vehicle;
sensing, by an impact sensor, a collision of the hybrid vehicle;
comparing, by a control unit, the voltage level of the low voltage battery to a first reference value;
controlling a first relay, by the control unit, to provide a connection between the low voltage battery and a high voltage battery, when the measured voltage level of the low voltage battery is equal to or lower than the first reference level; and
determining whether the connection between the low voltage battery and the high voltage battery is established,
wherein the high voltage battery supplies electric power to a motor to drive the hybrid vehicle, via an inverter connected to the motor, and
wherein, when the connection is established, the control unit controls the first relay to disconnect the connection between the low voltage battery and the high voltage battery when the collision of the hybrid vehicle is sensed.
2. The battery discharge preventing method of claim 1, further comprising:
measuring, by a second voltage sensor, a voltage level of the high voltage battery; and
comparing, by the control unit, the voltage level of the high voltage battery to a second reference value,
wherein, when the connection is established, the control unit controls the first relay to maintain the connection between the low voltage battery and the high voltage battery when the measured voltage level of the high voltage battery is equal to or higher than the second reference value, and
wherein, when the connection is established, the control unit controls the first relay to disconnect the connection between the low voltage battery and the high voltage battery, when the measured voltage level of the high voltage battery is lower than the second reference value.
3. The battery discharge preventing method of claim 1,
wherein the control unit controls a second relay to disconnect a connection between the high voltage battery and the inverter connected to the motor of the hybrid vehicle, when the collision of the hybrid vehicle is sensed.
4. A battery discharge preventing system for a hybrid vehicle, comprising:
a high voltage battery configured to supply electric power to a motor of the hybrid vehicle;
a low voltage battery configured to supply electric power to an electric device installed in hybrid vehicle;
a first voltage sensor configured to measure a voltage level of the low voltage battery;
a converter configured to convert the electric power of the high voltage battery to the electric power of the low voltage battery;
a first relay configured to regulate a current path between the high voltage battery and the converter;
an impact sensor configured to detect a collision of the hybrid vehicle; and
a control unit configured to
receive the measured voltage levels of the low voltage battery and high voltage battery,
compare the measured voltage levels with a first reference value and a second reference value, and
control the first relay to regulate the current path between the high voltage battery and the converter,
wherein the control unit is configured to
control the first relay to provide a connection between the low voltage battery to the high voltage battery via the converter to charge the low voltage battery using the high voltage battery when the measured voltage level of the low voltage battery is equal to or lower than the first reference value, and
control the first relay to disconnect the connection between the high voltage battery and the low voltage battery when the collision of the hybrid vehicle is sensed by the impact sensor.
5. The battery discharge preventing system of claim 4, further comprising:
a second voltage sensor configured to measure a voltage level of the high voltage battery,
wherein the control unit controls the first relay to disconnect the connection between the high voltage battery and the low voltage battery when the measured voltage level of the high voltage battery is lower than the second reference value.
6. The battery discharge preventing system of claim 5, further comprising:
an inverter configured to receive the electric power from the high voltage battery and drive the motor of the vehicle; and
a second relay configured to selectively regulate a current path between the high voltage battery and the inverter,
wherein the control unit is configured to control the second relay to selectively regulate the current path between the high voltage battery and the inverter based on the detected collision of the hybrid vehicle.
US14/687,194 2014-04-16 2015-04-15 Battery discharge preventing system for hybrid vehicle and battery discharge preventing method using the same Active 2036-03-25 US10166879B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0045500 2014-04-16
KR1020140045500A KR102147321B1 (en) 2014-04-16 2014-04-16 Battery Discharge Preventing System and Method Using the Same for Hybrid Vehicle

Publications (2)

Publication Number Publication Date
US20150303716A1 US20150303716A1 (en) 2015-10-22
US10166879B2 true US10166879B2 (en) 2019-01-01

Family

ID=54250086

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/687,194 Active 2036-03-25 US10166879B2 (en) 2014-04-16 2015-04-15 Battery discharge preventing system for hybrid vehicle and battery discharge preventing method using the same

Country Status (4)

Country Link
US (1) US10166879B2 (en)
KR (1) KR102147321B1 (en)
CN (1) CN105034833B (en)
DE (1) DE102015206585A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11325502B2 (en) * 2017-09-25 2022-05-10 Lg Chem, Ltd. Electric vehicle

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170014962A (en) * 2015-07-31 2017-02-08 현대자동차주식회사 Battery Management System for vehicle and controlling method thereof
DE102015012358A1 (en) * 2015-09-19 2017-03-23 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Power supply system of a motor vehicle, motor vehicle and method for operating a power supply system
GB2552483B (en) 2016-07-25 2020-04-22 Jaguar Land Rover Ltd Battery management apparatus and method
US10396647B2 (en) * 2016-10-10 2019-08-27 Mando Corporation Converter controlling device for hybrid vehicle and converter controlling method for hybrid vehicle
KR102044484B1 (en) * 2017-05-04 2019-11-14 윤여민 Auxiliary battery control system for vehicle black box
JP7051488B2 (en) * 2018-02-23 2022-04-11 株式会社デンソーテン Monitoring system and monitoring method
JP7135722B2 (en) * 2018-10-29 2022-09-13 トヨタ自動車株式会社 vehicle
JP6964649B2 (en) * 2019-12-09 2021-11-10 本田技研工業株式会社 Vehicle control system
FR3122786B1 (en) * 2021-05-06 2024-03-29 Psa Automobiles Sa METHOD FOR MANAGING A LOAD LEVEL OF A LOW VOLTAGE ENERGY STORER
CN113320438B (en) * 2021-08-03 2021-11-02 江铃汽车股份有限公司 Storage battery charging method and device, readable storage medium and vehicle
CN115649006A (en) * 2022-10-27 2023-01-31 中国第一汽车股份有限公司 Control system and method of power battery and vehicle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070026711A1 (en) * 2005-07-26 2007-02-01 Ford Global Technologies, Llc System and a method for dissipating voltage in an electrical circuit of a vehicle
CN101160688A (en) 2005-04-15 2008-04-09 丰田自动车株式会社 Power supply device, control method of power supply device, and motor vehicle equipped with power supply device
US20100244782A1 (en) * 2009-03-02 2010-09-30 Omron Corporation Charging control device and method, charging device, as well as program
US20110106336A1 (en) * 2009-04-30 2011-05-05 Alevo, Inc. Vehicle Utility Communication System
KR20110120635A (en) 2010-04-29 2011-11-04 주식회사 자스텍 Administration apparatus and method for black-box system of vehicle
US20120150393A1 (en) * 2009-09-04 2012-06-14 Autoliv Development Ab vehicle battery safety system
CN202480896U (en) 2012-01-13 2012-10-10 浙江吉利汽车研究院有限公司 Safety redundancy device for automobile power battery system
CN103213510A (en) 2012-01-20 2013-07-24 福特全球技术公司 System and method for vehicle power management

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006280110A (en) * 2005-03-29 2006-10-12 Mitsubishi Fuso Truck & Bus Corp Battery charging system for hybrid electric vehicle
EP2424746A2 (en) * 2009-04-27 2012-03-07 AB Volvo Lastvagnar A battery charging system for a hybrid electric vehicle
US8941814B2 (en) 2011-06-20 2015-01-27 Nikon Corporation Multiple-blade holding devices
KR20140020499A (en) * 2012-08-08 2014-02-19 현대모비스 주식회사 Method for protecting high voltage battery of hev

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101160688A (en) 2005-04-15 2008-04-09 丰田自动车株式会社 Power supply device, control method of power supply device, and motor vehicle equipped with power supply device
US20090015193A1 (en) 2005-04-15 2009-01-15 Toyota Jidosha Kabushiki Kaisha Power Supply Device, Control Method of Power Supply Device, and Motor Vehicle Equipped with Power Supply Device
US20070026711A1 (en) * 2005-07-26 2007-02-01 Ford Global Technologies, Llc System and a method for dissipating voltage in an electrical circuit of a vehicle
US20100244782A1 (en) * 2009-03-02 2010-09-30 Omron Corporation Charging control device and method, charging device, as well as program
US20110106336A1 (en) * 2009-04-30 2011-05-05 Alevo, Inc. Vehicle Utility Communication System
US20120150393A1 (en) * 2009-09-04 2012-06-14 Autoliv Development Ab vehicle battery safety system
KR20110120635A (en) 2010-04-29 2011-11-04 주식회사 자스텍 Administration apparatus and method for black-box system of vehicle
CN202480896U (en) 2012-01-13 2012-10-10 浙江吉利汽车研究院有限公司 Safety redundancy device for automobile power battery system
CN103213510A (en) 2012-01-20 2013-07-24 福特全球技术公司 System and method for vehicle power management
US20130187590A1 (en) 2012-01-20 2013-07-25 Ford Global Technologies , Llc System and method for vehicle power management

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chinese Office Action dated Oct. 21, 2016 in connection with the counterpart Chinese Patent Application No. 201510181202.5, citing the above reference(s).

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11325502B2 (en) * 2017-09-25 2022-05-10 Lg Chem, Ltd. Electric vehicle

Also Published As

Publication number Publication date
DE102015206585A1 (en) 2015-10-22
CN105034833B (en) 2018-02-23
KR20150119724A (en) 2015-10-26
US20150303716A1 (en) 2015-10-22
CN105034833A (en) 2015-11-11
KR102147321B1 (en) 2020-08-24

Similar Documents

Publication Publication Date Title
US10166879B2 (en) Battery discharge preventing system for hybrid vehicle and battery discharge preventing method using the same
JP6583610B2 (en) Fault diagnosis device for vehicle charging system
EP3154150B1 (en) Battery controller
US9090177B2 (en) Uncertified battery replacement countermeasure apparatus for electric vehicle
US8686692B2 (en) Charge control system
JP5895912B2 (en) In-vehicle battery charging system and in-vehicle battery charging method
KR101428262B1 (en) Power control system for vehicle battery
JP5485413B2 (en) vehicle
KR101888987B1 (en) Power supply system for vehicle
US10059207B2 (en) Crash detection when a motor vehicle is at a standstill
US20150329001A1 (en) Electric charging method for a vehicle and electric vehicle charging device
CN104828004A (en) Control method and system for vehicle and vehicle
US11173858B2 (en) Vehicle power supply system
JP2022097786A (en) Backup battery control module and backup battery control system
KR20120002418A (en) Power apparatus of hybrid car
US10746836B2 (en) Diagnostic device for current sensor
US20120235472A1 (en) Power source control device and method, and power management system
KR101482029B1 (en) Vehicle Management System by Overlooking around the vehicle
US9278621B2 (en) Vehicular control system and its operating method
US20230280385A1 (en) Method for Monitoring at Least One Y-Capacitance of an Electrical On-Board Power Supply of a Vehicle, and Electrical On-Board Power Supply
US20120004810A1 (en) Vehicle-use safety control apparatus
KR20170112222A (en) Power Supply Intergrated Circuit for Vehicle
KR20160131723A (en) Charging apparatus and charging control apparatus for electric vehicle
CN116176465A (en) Vehicle power supply system
KR20210064494A (en) Insulation Resistance Control Apparatus Having Safety Plug Control Part, And Control Method Therefor

Legal Events

Date Code Title Description
AS Assignment

Owner name: MANDO CORPORATION, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEE, YOUNG OK;REEL/FRAME:035414/0515

Effective date: 20150410

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4

AS Assignment

Owner name: HL MANDO CORPORATION, KOREA, REPUBLIC OF

Free format text: CHANGE OF NAME;ASSIGNOR:MANDO CORPORATION;REEL/FRAME:062214/0438

Effective date: 20220908